Top Secret SME (Mainframe Security / Application Support)

Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services.

About the role

We are seeking an experienced Mainframe Security & Application Support Engineer to provide enterprise-level support for CA Top Secret (TSS) security administration and Natural/COBOL applications. The ideal candidate will have strong IBM z/OS mainframe experience, a background in mainframe security administration, and experience supporting production environments in a ticket-driven support model.

Responsibilities

• Administer and support CA Top Secret (TSS) security across enterprise mainframe environments.
• Process user access requests, including account creation, modification, and removal.
• Troubleshoot access, authentication, and authorization issues.
• Support Natural and COBOL applications, including incident resolution, production support, maintenance, and minor enhancements.
• Manage incident, request, and service task queues while meeting defined SLAs.
• Support general IBM z/OS mainframe operations, including production issues and batch processing.
• Assist with audit requests, access reviews, and compliance activities.
• Ensure application access complies with enterprise security policies and CA Top Secret controls.
• Support enterprise key rotation activities performed twice annually.
• Manage mainframe certificate renewals.
• Support started task account administration.
• Monitor and support batch processing and job scheduling using CA7.
• Collaborate with infrastructure, security, and application teams to resolve production issues.

Requirements

• Strong hands-on experience administering CA Top Secret (TSS).
• Experience with IBM z/OS mainframe environments.
• Experience supporting Natural and COBOL applications.
• Background in mainframe security administration.
• Experience working in a ticket-driven production support environment.
• Knowledge of Identity and Access Management (IAM) concepts and access provisioning.
• Experience with JCL (Job Control Language).
• Experience with CA7 batch scheduling and job management.
• Strong troubleshooting and analytical skills.
• Excellent communication and documentation skills.

Preferred Qualifications

• Experience with RACF and/or ACF2.
• Experience with IAM platforms such as SailPoint, NetIQ, or similar solutions.
• Experience supporting audit, compliance, and access governance activities.
• Experience working in large enterprise production environments.
• Salesforce (SFDC) experience.
• Knowledge of enterprise security governance and regulatory compliance.

Location: United States or Canada (U.S. preferred). Remote work available from Chicago, IL.